Mobile refrigeration apparatus

Abstract

A refrigeration unit designed for prolonged cooling with intermittent power supplies and adaptability to rotation is described. A spherical design is utilized comprising internal compartments that shift according to orientation of the sphere and enable internal cycling of water at substantially 4 degrees Celsius about an icy core.

The invention claimed is: 
     
       1. A functionally orientation agnostic, mobile refrigeration apparatus, comprising:
 an insulated container having payload space; 
 a thermally conductive spherical shell contained within the insulated container and configured to be full of water; 
 a cooling element for generating ice from water contained within the thermally conductive shell; and 
 an insulating partial-sphere that is thermally insulating and housed within the spherical shell and containing the cooling element positioned centrally in the thermally conductive spherical shell, the insulating partial-sphere configured to be oriented continuously flush with an interior upper curved surface of the spherical shell independent of the orientation of the insulated container and enabled for water contained within the spherical shell to be cooled by the cooling element through a fully exposed face of the insulating partial-sphere. 
 
     
     
       2. The apparatus of  claim 1 , further comprising:
 a powered rotation bar upon which the cooling element, the insulating partial-sphere, and spherical shell are mounted on, and where the spherical shell and cooling element are mounted to the powered rotation bar in a fixed orientation and the insulating partial-sphere is mounted to the powered rotation bar in a freely rotating configuration; and 
 a circular powered rail fixed internally to the insulated container and upon which the powered rotation bar is mounted; 
 wherein the powered rotation bar rotates freely within the circular powered rail such that despite the orientation of the insulated container, the powered rotation bar is in a horizontal orientation, and the circular powered rail draws power from an external source, and delivers power to the powered rotation bar, which in turn delivers power to the cooling element. 
 
     
     
       3. The apparatus of  claim 1 , further comprising:
 supports which mount the spherical shell centrally in the insulated container and include embedded electrical wiring from the exterior of the insulated container to the spherical shell; and 
 a gimbal mounted inside the spherical shell and configured to maintain and upright orientation for the insulating partial-sphere and including embedded electrical wiring which delivers power from the supports to the cooling element. 
 
     
     
       4. The apparatus of  claim 1 , further comprising:
 a buoyant top affixed to the top of the insulating partial-sphere which ensures the upright orientation of the insulating partial-sphere; 
 a pipe affixed to the cooling element and oriented to pass through the buoyant top, the pipe including electrical wiring to provide power to the cooling element; and 
 a hatch on the surface of the spherical shell; 
 wherein orienting the hatch as the top of the spherical shell additionally orients the pipe with the hatch and provides users access to the electrical wiring. 
 
     
     
       5. The apparatus of  claim 1 , the cooling element further comprising:
 an ice growth sensor which is configured limit the growth of ice around the cooling element such that the cooling element shuts off when ice reaches a predetermined growth size. 
 
     
     
       6. The apparatus of  claim 1 , further comprising:
 vending machine controls mounted on the exterior of the insulated container and enabling users to select payload items; and 
 a vending machine dispenser mounted inside the insulated container and configured to eject a selected payload item from the insulated container. 
 
     
     
       7. The apparatus of  claim 6 , wherein the vending machine controls comprise a biometric scanner. 
     
     
       8. The apparatus of  claim 1 , wherein the internal temperature of the insulated container is maintained at four degrees Celsius. 
     
     
       9. The apparatus of  claim 8 , wherein the payload space includes vaccines and medicine. 
     
     
       10. The apparatus of  claim 1 , further comprising:
 a controller; 
 a plurality of thermometers positioned at a number of locations both internally and externally to the insulated container and in communication with the controller; 
 a humidity sensor mounted internally to the insulated container and in communication with the controller; 
 a gyroscope sensor mounted to the insulated container and in communication with the controller; 
 a geo-positioner mounted to the insulated container and in communication with the controller; 
 an accelerometer mounted to the insulated container and in communication with the controller; and 
 a network communicator mounted to the insulated container and in communication with the controller, and providing data from other components in communication with the controller to an external network. 
 
     
     
       11. The apparatus of  claim 10 , further comprising:
 a shipping network server in communication with the external network and monitoring the shipping progress of the insulated container and transmitting updated shipping instructions for the insulated container over the external network. 
 
     
     
       12. A mobile refrigeration apparatus, comprising:
 an insulated container having payload space; 
 a thermally conductive spherical shell (“spherical shell”) contained within the insulated container and configured to be full of water; 
 an insulating partial-sphere housed within the spherical shell and configured to contain a block of ice positioned centrally in the thermally conductive spherical shell, the insulating partial-sphere configured to be oriented continuously flush with an interior upper curved surface of the spherical shell independently of the orientation of the insulated container and enabled for water contained within the spherical shell to exchange thermal energy with the block of ice through a fully exposed face of the insulating partial-sphere. 
 
     
     
       13. The apparatus of  claim 12 , further comprising:
 a buoyant insert embedded within the insulating partial-sphere that ensures the insulating partial-sphere remains flush with the interior upper curve of the spherical shell. 
 
     
     
       14. The apparatus of  claim 12 , wherein the internal temperature of the insulated container is maintained at four degrees Celsius. 
     
     
       15. The apparatus of  claim 14 , wherein the payload space contains vaccines. 
     
     
       16. A method for operating an orientation agnostic refrigerator, the method comprising:
 generating a block of ice about a cooling element positioned centrally within the spherical shell and on a fully exposed face of a self-orienting insulating partial-sphere (“partial-sphere”) inside a thermally conductive spherical shell filled with water, and wherein the block of ice causes the temperature of the water closest to the spherical shell to be maintained at four degrees Celsius; 
 enabling water warmer than four degrees Celsius and proximate to the spherical shell to rise toward the block of ice, and water that approaches four degrees Celsius while cooling to sink toward the spherical shell; 
 where the spherical shell is contained within an insulated container, reorienting the insulated container such that another face of the insulated container is upright; and 
 in response to said reorienting the insulated container, reorienting the partial-sphere flush with an interior upper curved surface of the spherical shell. 
 
     
     
       17. The method of  claim 16 , further comprising:
 monitoring block of ice size with an ice growth sensor; 
 in response to the block of ice dropping below a predetermined size threshold, generating additional ice with the cooling element. 
 
     
     
       18. The method of  claim 16 , further comprising:
 monitoring block of ice size with an ice growth sensor; 
 monitoring insulated container location by a location aware device onboard the insulated container; 
 calculating, by a processor, the rate of ice melt compared to the distance from nearest source of power to determine a projected time of temperature failure referenced with time from nearest power source; 
 issuing modified shipping instructions for the insulated container by a shipping network server to redirect the insulated container to a first known source of power based upon the projected time of temperature failure. 
 
     
     
       19. The method of  claim 16 , further comprising:
 receiving a vending request from vending controls on exterior of the insulated container; and 
 ejecting items from payload space of the insulated container according to the vending request.